protected void btnSave_Click(object sender, EventArgs e) { BookDAO dao = new BookDAO(); if (mode == "add") { if (isFormValid()) { Book book = new Book(); book.BookID = inBookID.Value; book.BookName = inBookName.Value; book.BookPrice = int.Parse(inBookPrice.Value); book.BookQuantity = int.Parse(inBookQuantity.Value); book.BookDiscount = int.Parse(inBookDiscount.Value); book.AuthorID = inAuthor.SelectedValue; book.CategoryID = inCategory.SelectedValue; book.ProducerID = inProducer.SelectedValue; book.Pages = int.Parse(inPages.Value); book.Size = inSize.Value; book.Year = int.Parse(inYear.Value); book.Description = inDescription.Value; dao.AddBook(book); init(); } } if (mode == "edit") { Book book = new Book(); book.BookID = inBookID.Value; book.BookName = inBookName.Value; book.BookPrice = int.Parse(inBookPrice.Value); book.BookQuantity = int.Parse(inBookQuantity.Value); book.BookDiscount = int.Parse(inBookDiscount.Value); book.AuthorID = inAuthor.SelectedValue; book.CategoryID = inCategory.SelectedValue; book.ProducerID = inProducer.SelectedValue; book.Pages = int.Parse(inPages.Value); book.Size = inSize.Value; book.Year = int.Parse(inYear.Value); book.Description = inDescription.Value; dao.UpdateBook(book); init(); } }